Calculate the tax for an income of $121,890 and filing as a head of household taxpayer. Schedule Z- If your filing status is Head of household If your taxable income is: The tax is: of the Over- But not over- amount over- $0 $13,150 10% $0 13,150 50,200 $1,315.00+15% 13,150 50,200 129,600 6,872.50 +25% 50,200 129,600 209,850 26,722.50 +28% 129,600 209,850 411,500 49,192.50 + 33% 209,850 411,500 439,000 115,737.00 + 35% 411,500 439,000 125,362.00+ 39.6% 439,000